FIGURE 3. FEATURES OF THE PTIR DETECTOR
Base Alignment Notch
Infrared
Light
Pipe
Magnet Test Point
Thermistors
Infrared
Light
Pipe
LEDs
C2050-00
FIGURE 4. CLEANING THE PTIR DETECTOR
Cover
Removal
Tabs
Sensor Cover
Sensing Chamber
Cover and Screen
Infrared
Light
Pipe
Thermistors
Sensing
Chamber
}
C2044-00
CAUTION
Dust covers provide limited protection against airborne dust particles during
shipping. Dust covers must be removed before the sensors can sense smoke.
Remove sensors prior to heavy remodeling or construction.
TAMPER RESISTANCE
Model MRI-2351TIRAP includes a tamper-resistant capability that prevents re-
moval from the base without the use of a tool. Refer to the base manual for
details on making use of this capability.
TESTING
Before testing, notify the proper authorities that the system is undergoing
maintenance, and will temporarily be out of service. Disable the system to
prevent unwanted alarms.
All sensors must be tested after installation and periodically thereafter. Test-
ing methods must satisfy the Authority Having Jurisdiction (AHJ). Sensors
offer maximum performance when tested and maintained in compliance with
NFPA 72. Sensitivity readings are available through the fire alarm control
panel (FACP). Refer to the manufac turer’s published instructions for proper
use.
The sensor can be tested in the following ways:
A. Functional: Magnet Test (P/N M02-04-01 or M02-09-00)
This sensor can be functionally tested with a test magnet. The test magnet
electronically simulates smoke in the sensing chamber, testing the sensor
electronics and connections to the control panel.
a. Hold the test magnet in the magnet test area as shown in Figure 3.
b. The sensor should alarm the panel.
Two LEDs on the sensor are controlled by the panel to indicate sensor
status. Coded signals, transmitted from the panel, can cause the LEDs to
blink, latch on, or latch off. Refer to the control panel technical documen-
tation for sensor LED status operation and expected delay to alarm.
NOTE: The magnet test initiates an approximately 10 minute period when
the detector's signal processing software routines are not active.
B. Smoke Entry
Canned aerosol simulated smoke (canned smoke agent) may be used for
smoke entry testing of the smoke detector.
The multi-criteria smoke sensor uses algorithms to process signals re-
ceived from multiple sensors to determine alarm conditions and reduce
false alarms. Therefore, a single burst of canned smoke will not immedi-
ately place the detector into an alarm condition because the detector al-
gorithms correctly determine a burst of canned smoke is not fire. In order
to perform functional testing of the photoelectric sensor, the device must
be placed into test mode. Test mode allows the detector to isolate the indi-
vidual sensors for testing. The device can be placed into test mode through
either of the following methods.
a. Put the device into test mode by holding a test magnet in the magnet
test area as shown in Figure 3 for 6-12 seconds.
NOTE: If the magnet is held in place for too long the fire alarm test func-
tion will be triggered. (See Magnet Test, above.) Reset the panel and pro-
ceed with testing the smoke entry portion of the device.
b. Perform smoke entry testing immediately following the magnet test. The
magnet test initiates an approximately 10 minute period when the detec-
tor’s signal processing software routines are not active.
Once in test mode, test the smoke detector using one of the tested and ap-
proved aerosol smoke products. Refer to the manufacturer’s published instruc-
tions for proper use of the canned smoke agent. When used properly, the
canned smoke agent will cause the smoke detector to go into alarm.
Tested and approved aerosol smoke products include:
Manufacturer
Model
HSI Fire and Safety
25S, 30S (PURCHECK)
SDi
SMOKE CENTURION , SOLO A10,
SMOKESABRE, TRUTEST, SOLO 365
No Climb
TESTIFIRE 2000
CAUTION
Canned aerosol simulated smoke (canned smoke agent) formulas will vary
by manufacturer. Misuse or overuse of these products may have long term
adverse effects on the smoke detector. Consult the canned smoke agent manu-
facturer’s published instructions for any further warnings or caution statements.
C. Direct Heat Method (Hair Dryer of 1000-1500 watts)
A hair dryer of 1000-1500 watts should be used to test the thermistors. Di-
rect the heat toward the thermistor, holding the heat source approximately
12 inches (30 cm) from the detector in order to avoid damaging the plastic
housing. The detector will reset only after it has had sufficient time to
cool. Make sure both thermistors are tested individually.
D. Multi-Criteria Testing
Testifire® by SDi provides testing of the smoke and heat sensors. Consult the
manufacturer’s published instructions for complete usage instructions.
A sensor that fails any of these tests may need to be cleaned as described
under CLEANING, and retested. When testing is complete, restore the system
to normal operation and notify the proper authorities that the system is back
in operation.
CLEANING
Before removing the detector, notify the proper authorities that the smoke
detector system is undergoing maintenance and will be temporarily out of
service. Disable the zone or system undergoing maintenance to prevent un-
wanted alarms.
1. Remove the sensor to be cleaned from the system.
2. Remove the sensor cover by pressing firmly on each of the four removal
tabs that hold the cover in place.
3. Vacuum the screen carefully without removing it. If further cleaning is
required continue with Step 4, otherwise skip to Step 7.
4. Remove the chamber cover/screen assembly by pulling it straight out.
5. Use a vacuum cleaner or compressed air to remove dust and debris from
the sensing chamber.
6. Reinstall the chamber cover/screen assembly by sliding the edge over the
sensing chamber. Turn until it is firmly in place.
7. Replace the cover using the LEDs to align the cover and then gently push-
ing it until it locks into place. Make sure that the thermistors do not be-
come bent under the cover.
8. Reinstall the detector.
9. Test the detector as described in TESTING.
10. Reconnect disabled circuits.
11. Notify the proper authorities that the system is back on line.
SPECIAL NOTE REGARDING SMOKE DETECTOR GUARDS
Smoke detectors are not to be used with detector guards unless the combina-
tion has been evaluated and found suitable for that purpose.
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I56-6736-000
10/14/2020
